DFW07CA150

NTSB accident investigation · Ayres S2R-G10 · Colorado City, TX · July 6, 2007

Accident · No injuriesData collectionFinal report
Date
July 6, 2007, 16:30 local (22:30 UTC)
Place
Colorado City, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N2254SAyres S2R-G10
Weather
Visual (VMC) · Day
Status
Completed · report July 25, 2007
Report
Approved by Office Director
Parties
Lubbock, Texas
Case key
66150

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The loss of engine power due to an oil leak. A contributing factor was the lack of suitable terrain for the forced landing.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerManeuvering - aerial application
Reason for occurrence undetermined - abortedAtc personnel(artcc)Cause
Fluid,oil - leakCause
Forced landingEmergency descent/landing
In flight collision with terrain/waterEmergency landing
Terrain condition - rough/unevenFactor

Analysis

The engine of the turbine powered agricultural airplane lost power about 30 minutes into the aerial application flight. The 14,000-hour commercial pilot reported that while maneuvering, at approximately 10 feet above ground level (AGL), the engine lost power and he was unable to maintain flight. The pilot elected to execute a forced landing on nearby terraced cotton field. After touchdown, the single-engine airplane slid for approximately 150 to 200 feet before it came to rest in the upright position. There was no post impact fire. The wings, fuselage, and tail sustained structural damage. The propeller was also damaged. The FAA inspector, who responded to the site, found evidence of an engine oil leak along the left side and lower fuselage; however, he was unable to determine where the source of the engine oil leak. The examination of the engine oil reservoir revealed that the reservoir and the dipstick were dry. The airplane was reported to have about 100-gallons of fuel on board at the time of the mishap. A review of the airplane's logbooks indicate that the last annual inspection and 100-hour inspection was performed on March 10, 2007. The total time on the airframe at that time was determined to be 5,175.8 hours.

Factual narrative

The engine of the turbine powered agricultural airplane lost power about 30 minutes into the aerial application flight. The 14,000-hour commercial pilot reported that while maneuvering, at approximately 10 feet above ground level (AGL), the engine lost power and he was unable to maintain flight. The pilot elected to execute a forced landing on nearby terraced cotton field. After touchdown, the single-engine airplane slid for approximately 150 to 200 feet before it came to rest in the upright position. There was no post impact fire. The wings, fuselage, and tail sustained structural damage. The propeller was also damaged. The FAA inspector, who responded to the site, found evidence of an engine oil leak along the left side and lower fuselage; however, he was unable to determine where the source of the engine oil leak. The examination of the engine oil reservoir revealed that the reservoir and the dipstick were dry. The airplane was reported to have about 100-gallons of fuel on board at the time of the mishap. A review of the airplane's logbooks indicate that the last annual inspection and 100-hour inspection was performed on March 10, 2007. The total time on the airframe at that time was determined to be 5,175.8 hours.

Aircraft

Registration
N2254S
Reported as
Ayres S2R-G10
Category
Airplane
Serial number
G10-134
Engine
Garrett TPE 331-10, 940 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Don Chiles, doing business as Chiles Flying Service Inc.
Registered owner
Don Chiles
Airworthiness certificate
Special, Restricted (Special)
Departed
T88 · Colorado City, TX
Destination
T88

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
66
Injuries
None
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 2, Without waivers/limitations
Last flight review
May 1, 2007
Seat
Single
Flight hours
14,000 total · 10,000 in this make and model · 200 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 63 °F
Altimeter
30.12 inHg
Observed at
KSNK, 14 nm away